Abstract: Selective non-catalytic reduction (SNCR) technology of GE Company is applied to the CO burner of 3.5 Mt/a RFCC unit in Guangxi Petrochemical Company，CNPC. The results showed that using SNCR process, the NOx emission in RFCC flue gas decreases from 200—400 mg/m3 （standard state）to 70—130 mg/m3（standard state）and meets the Emission standard of pollutants for petroleum refining industry in which NOx emission is not more than 200 mg/m3（standard state）. It has little influence on the temperature of CO burner in RFCC unit. No effect on the pressure of the CO burner and pH and NH3-N of sewage in FGD unit is observed. The SNCR process is simple and easy to be revamped. The material and energy consumption is also low. The denitration efficiency is as high as 72% if ammonia escape is less than 8 mg/m3.

Key words: RFCC, SNCR, flue gas denitration